Drying-kiln



(No Model.) v z sheens-sheet 1.

S. W. PEREGRINE.

DRYING KILN. N0. 467,953. Patented Feb. 2, 1892.

5W REIEGPINJS,

(No Model.) 2 Sheets- Sheet 2. S. W. PBRBGRINE. DRYING KILN.

No. 467,953. Patent-ed Feb. 2, 1892.

' ases Ede/@Z027 f@ m 5, WZERZGRIJV UNITED STATES PATENT OFFICE.

SEYMOUR NV. PEREGRINE, OF GRAND RAPIDS, MICHIGAN.

DRYlNG-KILN.

SPECIFICATION forming part of Letters Patent No. 467,953, dated February 2, 1892.

Application filed July 2, 1890. Serial No. 357,528. (No model.)

To all whom it may concern,.-

Be itknown that I, SEYMOUR XV. PERE- GRINE, a citizen of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Drying-Kilns, of which the following is a specification.

The object of my invention is to provide a kiln for drying lumber, having special provision for accelerating the condensing of moisture and for carrying said moisture away.

In the accompanying drawings, Figure 1 is a transverse vertical section through the kiln. Fig. 2 is aplan View of a portion of the same on line o: Fig. l; and Fig. 3 represents modiiications of the condensing-roof and shows means for collecting the moisture, which are applicable to other forms ot roof.

The main structure of the kiln includes any suitable base composed of cross-beams l 2 and side boards, from which extend vertical studs 4, placed at a suitable distance apart. These studs support the upper structure, consisting of the upwardly andinwardlyinclined beams 5, which constitute the supports for covering-boards 6, hereinafterdescribed. On the outside of the studs a sheet-metal wall ci is Secured, and on the inner side the studs are sheathed up by planks b. This construction leaves a hue-space c between the boards b and the metal outer wall, and the vertical extending studs divide this flue-space into a number of iiues d, Fig. 2, each of which communicates with the interior of the kiln at the top and bottom.

Referring particularly to Figs. l and 2, at the upper portion of the kiln is placed an inverted metal roof A, which extends from the outer sheet-metal wall, inclining inwardly and downwardly to the point 9, where it is supported by means of the hangers l0. A trough ll extends beneath the roof along the meeting edge of the two inclined sides constituting the inverted roof. Tithin the tlues d deiiector-plates l2 are secured to the inner board wall, said plates extending outwardly toward the sheet-metal Wall and inclining downwardly. The heating-pipes are represented at B, and at C are shown tracks upon which the cars loaded with the lumber may be run into the kiln and held in position for drying. The arrows in Fig. l indicate the circulation of the air-currents, the heated air rising through the interior of the kiln from the heating-coils being divided by the inverted sheetmetal roof and deiiected laterally, thence passing through openings 13 over the inner board wall, thence downwardly through the flues d, and back to the heating-coil beneath the planks 14, which form a continuation of the inner board wall and of the iiues d. The moisture condensed upon the under side of the inverted sheet-metalroof trickles down the inclined sides thereof into the trough ll, which conveys the moisture outside the kiln. rlhe deflectors l2 cause the air-currents tobe thrown at intervals out wardly against the outersheet-m'etal wall and condensation also takes place here. Troughs 30 on the inner sides of the outer walls carry off the water of condensation. In order to keep the inverted roof cool, it is protected from the rays of the sun by the cover, consisting of the beams 5 and the boards G. The boards are placed at a slight distance apart, so that the air is freely admitted tothe upper side of the inverted-roof, and rain and snow may also pass through into contact with the condenser-roof, thus aiding materially the condensation of the moisture upon the under side of said roof by keeping the same subjected to cooling iniuences.

qWhile I prefer the form of cover shown, it will be understood that other forms may be provided, it being desirable that the roof be perforated for the purpose above described.

The deflectors in the tiues d are made of spring material, so that they will accommodate themselves to the different strengths of the currents of air.

The gable ends ot the kiln may be left open to aid the cooling action of the metal con- (lensing-roof.

In Fig. 3 are shown modified arrangements of the condensing-roof. The inverted roof may be entirely upon one side of the center, as on the left of said Fig. 3, and the arrangement on the right may be the same, or the roof may be ofthe ordinary form, as on the IOO right of Fig. 3, which shows both modifications for convenience. In each case, however, the roof consists of an inclined plate or plates having lines at their upper edges and communicates with the interior of the kiln through a passage 1S, and in the form shown 1t 1s arranged centrally, though I do not Wish t0 be limited to this, as the drum may be used Wlthother Iforms of roof than that shown in Fig. Returnpipes 19 lead from the upper end of the drum down outside the kiln and inward through its lower frame-Work beneath the heating-pipes.

I claim as my invention- In combination, thesupporting structure, the heating apparatus, the roof for defiecting the air-currents and condensing the moisture, and a cover for said roof, having perforations 0r openings, substantially as described.

In testimony whereof I affix my signature in presence of tWo Witnesses.

SEYMOUR 7. PEREGRINE.

Witnesses: .Y

CHARLES A. RENWICK, A. D. LINN. 

